best price sds hexagonal self drilling screw DIN7504(K) with epdm bonded washer 6.3*32 carton packing

Handan Shuangzi Metal Products Co., Ltd is a professional manufacturer of drilling screw and tapping screw enterprises. Since its establishment, the company has been focusing on the produc- tion and R&D of drilling screw, which has built a morden, high standard, scale, variety of profes- sional production line of drill tail screw. All used equipment are imported from Germany, Japan and Taiwan, with an annual output of high quality, multi-variety drill tail screw. The company employed the top domestic technologist, in hexagon-shaping\clipping\thread-rolling\carburize\zinc plated\washer machine\package and other processes, every link strives for perfection and the best.

Workers with rich experience, bear hardships and stand hard work. We are proud of them.

Taiwan machinery, high precision, cooperate with experienced workers to ensure the quality.

We are a formal factory, which has passed ISO certification, has a standardized production process and strict quality management, so you can rest assured to cooperate with us.

yellow zinc

white zinc

1000 hours ruspert, class 3